[New Feature]: Replace dldir1.qq.com with dldir1v6.qq.com for Improved IPv6 Support

Description of the new feature/enhancement

Considering that dldir1.qq.com and dldir1v6.qq.com serve identical content, with the latter adding IPv6 parsing support, this poses a significant benefit for users relying solely on IPv6 or for those for whom IPv6 traffic incurs a lower cost. This shift promises a smoother and more cost-effective download experience for Tencent software packages. I've noticed that some download links in QQMusic have already been transitioned to this format. I'd like to propose that we replace the current dldir1.qq.com links with dldir1v6.qq.com across all platforms for enhanced user experience.

Proposed technical implementation details (optional)

The implementation may involve updating all references of dldir1.qq.com to dldir1v6.qq.com in the codebase. A careful review and testing process should be conducted to ensure that all links are updated correctly and that the user experience is seamless with the new IPv6-supported links.

Search the repository for every reference to dldir1.qq.com and review the matching package manifests. Replace the references with dldir1v6.qq.com where appropriate, then verify that no intended links remain unchanged and that the updated manifests are valid.